2x +3y = 6
5x + 8y = 9
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let 2x + 3y = 6 be eqn ( i)
5x+ 8y = 9 be eqn ( ii)
multiply eqn( i ) by 5
= 10x + 15y = 30
multiply eqn ii by 2
10x + 16y = 18
- 10x - 15y = - 30
y = -12
2x - 36= 6
2x= 42
x = 21
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